WATER SCIENCE AND TECHNOLOGY
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2024
·Vol. 89
·期 10
·2812-2822
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IF 2.5
Li Chen,Liu Jing,Lou Guanchen,Yu Chuning
View large Download slide View large Download slide Close modal The sequential extraction routes of biogenic materials from sewage sludge (SS) were investigated. Physical methods (ultrasound, heating) and chemical methods (sodium hydroxide, sodium carbonate) were used to extract extracellular polymeric substances (EPS) and alginate-like extracellular polymers (ALEs) from SS. The residues after extraction were further subjected to physical methods (heating) and chemical methods (sulfuric acid, sodium hydroxide) for protein extraction. A comparison was made between sequential extraction routes and direct extraction of biomaterials from sludge in terms of extraction quantity, material properties, and applicability. The results showed that sequential extraction of biomaterials is feasible. The highest extraction quantities were obtained when using sodium carbonate for EPS and ALE extraction and sodium hydroxide for protein, reaching 449.80 mg/gVSS, 109.78 mg/gVSS, and 5447.08 mg/L, respectively. Sequential extraction procedures facilitate the extraction of biomaterials. Finally, suitable extraction methods for different application scenarios were analyzed. Reported sequential extraction route of biomaterials from sludge. Sequential extraction enhanced the release of biomaterials. Appropriate extraction methods for different scenarios are clarified.
研究领域:
环境科学
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生物技术
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2016
·
IF 3.138
Jun-Jun Shi,Jian-Guo Zhang,Yu-Han Sun,Jie Qu,Ling Li,Chandan Prasad,Zhao-Jun Wei
The sequential extraction of peony seed dreg polysaccharides (PSDP) with hot buffer (HBSS), chelating agent (CHSS), dilute alkaline (DASS) and concentrated alkaline (CASS) yielded four different polysaccharide fractions. Based on their absorptions at 3600–3200 cm −1 and 1200–800 cm −1 , these fractions were confirmed to be polysaccharides . The properties of four PSDPs displayed some slight differences. The CASS showed the highest peak temperature and endothermic enthalpy. The emulsifying activity and emulsifying stability of four PSDPs exhibited a dose-dependent pattern; HBSS showed the highest emulsifying activity, and CHSS displayed the longest emulsifying stability. The four PSDPs also exhibited wide variations in their antioxidant activities. For example, i) CASS showed the highest DPPH radical scavenging activity, reducing power and ABTS radical scavenging activity; ii) HBSS exhibited the highest hydroxyl radical scavenging activity, and iii) CHSS displayed the higher ferrous ions chelating ability than others.
研究领域:
食品科学
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天然产物化学
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碳水化合物化学
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功能食品
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抗氧化研究
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jialing Tang,Xiaoli Qin,Ritva Repo-Carrasco-Valencia,Xiai Yang,Yanchun Deng,Chunsheng Hou,Xiushi Yang
Jute ( Corchorus olitorius L.) leaves have long been consumed as an edible vegetable in Asia and Africa, which are underexplored sources of bioactive polysaccharides. This study employed sequential solvent extraction (water, oxalate, acid, alkali) to isolate four novel polysaccharide fractions (WJP, OJP, HJP, AJP) and evaluated their structural, functional, and antioxidant properties. Polysaccharides were characterized for chemical composition, monosaccharide profile, molecular weight, and microstructure. Functional properties (oil/water holding, emulsification, rheology) and DPPH/ABTS scavenging activities were assessed against commercial citrus pectin (CP). All polysaccharide fractions were RG-I dominant with solvent-dependent features. WJP had the highest M w (3.30 × 10 6 Da) and viscosity; OJP showed peak emulsification linked to high DE (27.79 %); HJP exhibited superior emulsion stability from extensive branching; AJP contained abundant protein (12.70 %) and phenolics (59.46 mg GAE/g), driving exceptional antioxidant capacity. Functionally, jute leaf polysaccharides surpassed CP in OHC, WHC, and emulsification. Outperforming antioxidant activities of AJP and WJP correlated with protein-phenolic content and structural features. Solvent-directed sequential extraction yields jute polysaccharides with customizable functionality. OJP (emulsifier), WJP (thickener), and AJP/WJP (antioxidants) offer sustainable, high-performance alternatives to commercial hydrocolloids, contingent on further purification.
研究领域:
食品化学
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植物生物化学
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生物聚合物科学
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营养科学
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2025
·Vol. 26
·期 17
·8341
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IF 4.9
Bo Yu,Liwen Huang,Yuhan Ding,Ning Zhang,Kexin Li,Yuanbao Jin,Zhihua Wu
Naringin and pectin were innovatively and sequentially extracted from naturally dropped fruit of pomelo (NDFP), optimizing yields via response surface methodology (RSM). Under optimized conditions, naringin was extracted first with 70% ethanol (70 °C, 110 min, SSR 15:1v/w), followed by pectin extraction from the residue using pH 1.50 acetic acid (80 °C, 160 min, ratio 40:1v/w) naringin yield reached 42.77% with 97.6% ± 0.31% HPLC purity, while pectin yield was 14.32%. Critically, the recovered pectin was identified as low-ester and exhibited significantly superior antioxidant activity compared to commercial pectin. This work establishes an efficient sequential extraction process valorizing waste pomelo drop, yielding high-purity naringin and antioxidant-rich, low-ester pectin.
研究领域:
食品科学
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化学工程
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天然产物提取
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生物化学
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废弃物管理
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）